The Soviet R-7 Semyorka, the world’s first Intercontinental ballistic missile, became operational.
Source
Citizens of Bikini Island evacuated for nuclear testing.
US President Franklin D. Roosevelt received a letter from Albert Einstein detailing the possibility of atomic weapons.
Albert Einstein warned against hydrogen bombs on the ''Today with Mrs. Roosevelt" weekly TV show.
Machine guns were used for the first time in a battle in Omdurman, Sudan, Africa.
India had their first successful nuclear bomb test.
